Effective QCD coupling and power corrections to photon-photon scattering
The scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities Q in the range of a few GeV, accessible at the CERN e+e- collider LEP II, power-behaved contributions in (ΛQCD/Q)n to the total cross section may become non-negligible. Based on a dispersion relation...
| Main Author: | |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
1998
|
| _version_ | 1797082090550853632 |
|---|---|
| author | Hautmann, F |
| author_facet | Hautmann, F |
| author_sort | Hautmann, F |
| collection | OXFORD |
| description | The scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities Q in the range of a few GeV, accessible at the CERN e+e- collider LEP II, power-behaved contributions in (ΛQCD/Q)n to the total cross section may become non-negligible. Based on a dispersion relation for the running coupling, we discuss these contributions and calculate the coefficients of the leading power correction for transversely polarized and longitudinally polarized virtual photons. |
| first_indexed | 2024-03-07T01:23:18Z |
| format | Journal article |
| id | oxford-uuid:91181ede-3a4f-4201-9581-1a0fca31775d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:23:18Z |
| publishDate | 1998 |
| record_format | dspace |
| spelling | oxford-uuid:91181ede-3a4f-4201-9581-1a0fca31775d2022-03-26T23:16:15ZEffective QCD coupling and power corrections to photon-photon scatteringJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:91181ede-3a4f-4201-9581-1a0fca31775dEnglishSymplectic Elements at Oxford1998Hautmann, FThe scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities Q in the range of a few GeV, accessible at the CERN e+e- collider LEP II, power-behaved contributions in (ΛQCD/Q)n to the total cross section may become non-negligible. Based on a dispersion relation for the running coupling, we discuss these contributions and calculate the coefficients of the leading power correction for transversely polarized and longitudinally polarized virtual photons. |
| spellingShingle | Hautmann, F Effective QCD coupling and power corrections to photon-photon scattering |
| title | Effective QCD coupling and power corrections to photon-photon scattering |
| title_full | Effective QCD coupling and power corrections to photon-photon scattering |
| title_fullStr | Effective QCD coupling and power corrections to photon-photon scattering |
| title_full_unstemmed | Effective QCD coupling and power corrections to photon-photon scattering |
| title_short | Effective QCD coupling and power corrections to photon-photon scattering |
| title_sort | effective qcd coupling and power corrections to photon photon scattering |
| work_keys_str_mv | AT hautmannf effectiveqcdcouplingandpowercorrectionstophotonphotonscattering |